Product information:

Bluetooth version :V5.0
Battery capacity :40mAh
Net weight: 16 g
Running time :4 hours
Color: black, white
Standby time: about 90 hours
Frequency response: 20 ~ 20000 Hz
Charging time :1.5 hours
Drive unit :08mm
Impedance :320 soil 15%
Rated power :2mW
Transmission range :10 meters
Features: Call function, support music
Sound channel: stereo
Usage: earplug type

Packing list:

Bluetooth headset *1